Hierarchical ordered macro/mesoporous titania with a highly interconnected porous structure for efficient photocatalysis
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Ren, Yuan
Yang, Jianping
Wang, Lianjun
Jiang, Wan
Elzatahry, Ahmed A
Alghamdi, Abdulaziz
Deng, Yonghui
Zhao, Dongyuan
Luo, Wei
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Abstract
In this study, a 3-dimensional interconnected hierarchical ordered macro/mesoporous titania (HOPT) with thin walls, crystalline framework, large cavities (∼420 nm), uniform mesopores (3.7 nm) and high surface area (177 m2 g-1) was synthesized through a facile bi-template interface-directed deposition method using poly(propylene oxide)-block-poly(ethylene oxide)-block-poly(propylene oxide) (Pluronic P123) triblock polymer as a soft template and structure directing agent, titanium isopropoxide (TIPO) as a titania source and 3-dimensional ordered macroporous carbon (3DOMC) as the hard template and the nanoreactor. This was followed with a two-step thermal treatment in nitrogen and air. Under simulated sunlight irradiation at room temperature, the HOPT shows an ultrahigh photocatalytic activity for the degradation of Rhodamine B (RhB) with a fast reaction rate that is three times higher than commercial titania nanoparticles (P25).
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Journal of Materials Chemistry A
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4
Issue
42
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Macromolecular and materials chemistry
Materials engineering
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Physical Sciences
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Chemistry, Physical
Energy & Fuels
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Zhao, T; Ren, Y; Yang, J; Wang, L; Jiang, W; Elzatahry, AA; Alghamdi, A; Deng, Y; Zhao, D; Luo, W, Hierarchical ordered macro/mesoporous titania with a highly interconnected porous structure for efficient photocatalysis, Journal of Materials Chemistry A , 2016, 4 (42), pp. 16446-16453